12151005 has 24 divisors (see below), whose sum is σ = 20659872. Its totient is φ = 6097152.

The previous prime is 12150989. The next prime is 12151019. The reversal of 12151005 is 50015121.

It is not a de Polignac number, because 12151005 - 2⁴ = 12150989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2934 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (860828).

Almost surely, 2^12151005 is an apocalyptic number.

12151005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12151005 is a deficient number, since it is larger than the sum of its proper divisors (8508867).

12151005 is a wasteful number, since it uses less digits than its factorization.

12151005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845 (or 2828 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 12151005 is about 3485.8291696525. The cubic root of 12151005 is about 229.8991681522.

Adding to 12151005 its reverse (50015121), we get a palindrome (62166126).

The spelling of 12151005 in words is "twelve million, one hundred fifty-one thousand, five".